Migrate tests/test_maamp.py to npt.assert_allclose

[viknesh-ai]

Related to #1175

tests/test_maamp.py (34 sites). Renamed comp to cmp, flipped order. maamp() returns (P, I) as two separate arrays rather than one combined one, so most sites are already clean float64/int64 — only test_naive_maamp needed a cast, since its ref side comes from naive.aamp() (same object-dtype issue as test_aamp.py). A couple of sites keep the config.STUMPY_TEST_PRECISION reference. Left the one npt.assert_equal call untouched, it's an exact-equality check on indices, not assert_almost_equal.

41/41 passing locally in both normal and CI-equivalent modes.

To Do List

• assert_allclose, cmp first
• atol=1.5e-07 / config reference where it was
• cmp not comp
• ref_/cmp_ naming, cast only where the source is dtype=object

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[gitnotebooks]

Review these changes at https://app.gitnotebooks.com/stumpy-dev/stumpy/pull/1198

[viknesh-ai]

@seanlaw next one — same conventions as before.